4A0-105: Nokia Virtual Private LAN ServicesDemo

By Nokia · Question Mode

QuestionQ89

VPLS loop avoidance

Under IEEE 802.1ag, how are merged services detected?

  • A The MEP sees the CFM frame from a different MEG.
  • B The MEP sees a different service-id in the frame sent by a MEP.
  • C The MIP transmits the service-id for each service. The MIP should only see it's own service-id.
  • D This is a function of 802,3ah EFM,
Explanation

A merged-service condition is detected when a Maintenance End Point (MEP) receives a Connectivity Fault Management (CFM) frame associated with a different Maintenance Entity Group (MEG), indicating that maintenance traffic from separate services is present on the same service.

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